Note the white and yellow locomotive on the 2nd shelf. That is a model of the Milwaukee Road's Class A, which was used between Chicago and St. Paul Minnesota on passenger trains which were scheduled such that speeds in excess of 100 mph were required. This railroad had a famous (at the time) speed-limit sign reading "Slow to 100 mph" on one particular section of track. Here's what the real locomotive looked like leaving Chicago in the mid-1930's. What "kid" wouldn't want a model of that?